package String;

public class int_to_string {
    public static void main(String[] args) {
        int [] arr={1,2,3,4};

        //数组变成字符串
        String str=arrToString(arr);

        System.out.println(str);
    }

    public static String arrToString(int[] arr){
        StringBuilder sb=new StringBuilder();
        sb.append("[");
        for(int i=0;i<arr.length;i++){
            if(i==arr.length-1){
                sb.append(arr[i]);
            }
            else{
                sb.append(arr[i]+",");//sb.append(arr[i]).append(",");
            }
        }
        sb.append("]");

        return sb.toString();
    }
}
